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Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal

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Compact light-emitting diode lighting ring for video-assisted thoracic surgery.

Ming-Kuan Lu¹, Feng-Chen Chang¹, Wen-Zhe Wang¹

¹National Yang-Ming University, Institute of Biophotonics, Taipei 11221, Taiwan.

Journal of Biomedical Optics

|October 8, 2014

Summary

A new foldable ring-shaped light-emitting diode (LED) lighting assembly offers improved illumination for video-assisted thoracic surgery (VATS). This compact, disposable device enhances background lighting and imaging quality compared to traditional sources.

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Area of Science:

Medical Devices
Surgical Illumination Technology
Minimally Invasive Surgery

Background:

Conventional lighting in minimally invasive surgery, such as laparoscopy and endoscopy, often uses fiber bundles.
These traditional sources can have limitations in providing uniform and high-brightness illumination.
Effective background illumination is crucial for optimal visualization during complex surgical procedures like video-assisted thoracic surgery (VATS).

Purpose of the Study:

To develop and evaluate a novel, compact, and flexible foldable ring-shaped light-emitting diode (LED) lighting assembly.
To assess the performance of this LED assembly for direct and uniform background illumination in VATS.
To compare the illumination capabilities of the LED assembly against conventional fiber-coupled light sources.

Main Methods:

A foldable ring-shaped LED lighting assembly was designed and fabricated.
The assembly was attached to a rubber wound retractor for practical application.
Performance was validated through porcine animal experiments, focusing on illumination uniformity and brightness.
Comparative analysis with traditional fiber bundle light sources was conducted.

Main Results:

The LED lighting assembly demonstrated a compact, flexible, and disposable design.
It provided direct, high-brightness lighting, resulting in more uniform background illumination.
The assembly's broad solid angle of illumination significantly improved background lighting and imaging quality in VATS.
Porcine experiments confirmed the practical utility and effectiveness of the device.

Conclusions:

The developed foldable ring-shaped LED lighting assembly is a viable and effective solution for enhancing illumination in VATS.
Its design offers advantages in terms of compactness, flexibility, and disposable nature.
The superior illumination quality provided by the LED assembly leads to improved visualization and potentially better surgical outcomes in VATS.